US4657970A
Expired / Lapsed
US
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Modified block copolymer composition
Assignee: Asahi Kasei Corp
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Filing: 1985-08-26
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Granted: 1987-04-14
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Expires: 2005-08-26
Abstract
Abstract A modified block copolymer composition comprising a thermoplastic polymer and a modified block copolymer consisting essentially of a base block copolymer of a monovinyl substituted aromatic hydrocarbon polymer block and an olefin compound polymer block having an ethylenic unsaturation degree not exceeding 20%, the base block copolymer having a molecular unit containing a carboxylic acid group and/or a group derived therefrom grafted thereto. The modified block copolymer composition of the present invention is a resinous composition excellent in impact resistance, adhesion, paint adhesion, weatherability, resistance to thermal deterioration, transparency and gloss or a rubbery or leather-like composition excellent in heat resistance, adrasion resistance, compression set resistance, adhesion, transparency, oil resistance, weatherability and resistance to heat aging.
Inventors
- 👤 Toshinori Shiraki
- 👤 Fusakazu Hayano
- 👤 Hideo Morita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:17
CPC Classifications
C; C08; C08F; C08F287/00; C08F8/00; C08F8/04; C08F8/46; C08L; C08L51/00; C08L51/006; C08L77/00; C08F2810/00; C08F2810/20
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
192 words
A modified block copolymer composition comprising: (a) at least one thermoplastic polymer selected from the group consisting of polar thermoplastic polymers each containing at least one polar functional group, polyoxymethylenes, polycarbonates, modified polycarbonates, polysulfones, modified polysulfones, nitrile polymers, polyphenylene ethers, modified polyphenylene ethers, polyarylene sulfides and modified polyarylene sulfides; and (b) at least one modified block copolymer which comprises a base block copolymer of at least one monovinyl substituted aromatic hydrocarbon polymer block A and at least one olefin compound polymer block B having an ethylenic unsaturation degree not exceeding 20%, said base block copolymer having at least one molecular unit grafted thereto, said at least one molecular unit containing at least one member selected from a carboxylic acid group and groups derived therefrom, said monovinyl substituted aromatic hydrocarbon being contained in said base block copolymer in an amount of 5 to 60% by weight based on the weight of said base block copolymer; said at least one thermoplastic polymer (a) being present in a weight ratio of 2:98 up to 50:50 relative to said at least one modified block copolymer (b); said polar thermoplastic polymers excluding said modified block copolymer (b).
Claim 2
Dependent Claim
192 words
A modified block copolymer composition comprising: (a) at least one thermoplastic polymer selected from the group consisting of polar thermoplastic polymers each containing at least one polar functional group, polyoxymethylenes, polycarbonates, modified polycarbonates, polysulfones, modified polysulfones, nitrile polymers, polyphenylene ethers, modified polyphenylene ethers, polyarylene sulfides and modified polyarylene sulfides; and (b) at least one modified block copolymer which comprises a base block copolymer of at least one monovinyl substituted aromatic hydrocarbon polymer block A and at least one olefin compound polymer block B having an ethylenic unsaturation degree not exceeding 20%, said base block copolymer having at least one molecular unit grafted thereto, said at least one molecular unit containing at least one member selected from a carboxylic acid group and groups derived therefrom, said monovinyl substituted aromatic hydrocarbon being contained in said base block copolymer in an amount of 5 to 60% by weight based on the weight of said base block copolymer; said at least one thermoplastic polymer (a) being present in a weight ratio of 2:98 up to 50:50 relative to said at least one modified block copolymer (b); said polar thermoplastic polymers excluding said modified block copolymer (b).
Claim 3
Dependent Claim
45 words
A composition according to claim 1, wherein said modified polycarbonates, said modified polysulfones, said modified polyphenylene ethers and said modified polyarylene sulfides are respectively blends of polycarbonates, polysulfones, polyphenylene ethers and polyarylene sulfides with an alkenyl aromatic hydrocarbon polymer and/or an alkenyl aromatic hyddrocarbon copolymer.
Claim 4
Dependent Claim
51 words
A composition according to claim 1, wherein said polar thermoplastic polymers each contain at least one polar functional group selected from the group consisting of an amino group, hydroxyl group, thiol group, carboxyl group, isocyanate group, epoxy group, urethane group, ester group, amide group, ammonium salt group and metal carboxylate group.
Claim 5
Dependent Claim
13 words
A composition according to claim 3, wherein said polar thermoplastic polymers are polyamides.
Claim 6
Dependent Claim
14 words
A composition according to claim 3, wherein said polar thermoplastic polymers are thermoplastic polyesters.
Claim 7
Dependent Claim
14 words
A composition according to claim 3, wherein said polar thermoplastic polymers are thermoplastic polyurethanes.
Claim 8
Dependent Claim
14 words
A composition according to claim 3, wherein said polar thermoplastic polymers are polyvinyl alcohols.
Claim 9
Dependent Claim
14 words
A composition according to claim 3, wherein said polar thermoplastic polymers are polyvinyl esters.
Claim 10
Dependent Claim
49 words
A composition according to claim 3, wherein said polar thermoplastic polymers are ionomers of substrate copolymers of α,β-unsaturated carboxylic acids and other monomers, said ionomers having carboxylic acid groups ionically crosslinked through at least one metal ion selected from the group consisting of monovalent, divalent and trivalent metal ions.
Claim 11
Dependent Claim
52 words
A composition according to claim 1, wherein said molecular unit containing at least one member selected from a carboxylic acid group and groups derived therefrom is grafted onto said base block copolymer in an amount of 0.05 to 30 parts by weight per 100 parts by weight of said base block copolymer.
Claim 12
Dependent Claim
72 words
A composition according to claim 1, wherein said at least one modified block copolymer is a product obtained by the reaction of the base block copolymer of at least one monovinyl substituted aromatic hydrocarbon polymer block A and at least one olefin compound polymer block B having an ethylenic unsaturation degree not exceeding 20% with at least one modifying agent selected from the group consisting of unsaturated carboxylic acids and derivatives thereof.
Claim 13
Dependent Claim
106 words
A composition according to claim 11, wherein said product is one obtained by the addition reaction of the base block copolymer with at least one modifying agent selected from the group consisting of unsaturated carboxylic acids and derivatives thereof, said base block copolymer being a product produced by selectively hydrogenating a precursory block copolymer comprising at least one monovinyl substituted aromatic hydrocarbon polymer block and at least one polymer block composed mainly of a conjugated diene compound at its conjugated diene compound moiety to the extent that the ethylenic unsaturation degree of the polymer block composed mainly of the conjugated diene compound is 20% or less.
Claim 14
Dependent Claim
25 words
A composition according to claim 12, wherein the conjugated diene compound moiety of said precursory block copolymer has a vinyl content of 10 to 80%.
Claim 15
Dependent Claim
14 words
A composition according to claim 13, wherein the vinyl content is 25 to 65%.
Claim 16
Dependent Claim
113 words
Composition according to claim 12, wherein said at least one modifying agent is selected from the group consisting of maleic acid, maleic anhydride, maleic acid esters, maleic acid amides, maleic acid imides, fumaric acid, fumaric acid esters, fumaric acid amides, fumaric acid imides, itaconic acid, itaconic anhydride, itaconic acid esters, itaconic acid amides, itaconic acid imides, halogenated maleic acid, halogenated maleic anhydride, halogenated maleic acid esters, halogenated maleic acid amides, halogenated maleic acid imides, cis-4-cyclohexene-1,2-dicarboxylic acid, cis-4-cyclohexene-1,2-dicarboxylic anhydride, cis-4-cyclohexene-1,2-dicarboxylic acid esters, cis-4-cyclohexene-1,2-dicarboxylic acid amides, cis-4-cyclohexene-1,2-dicarboxylic acid imides, endo-cis-bicyclo(2,2,1)-5-heptene-2,3-dicarboxylic acid, endo-cis-bicyclo(2,2,1)-5-heptene-2,3-dicarboxylic anhydride, endo-cis-bicyclo(2,2,1)-5-heptene-2,3-dicarboxylic acid esters, endo-cis-bicyclo(2,2,1)-5-heptene-2,3-dicarboxylic acid amides, endo-cis-bicyclo(2,2,1)-5-heptene-2,3-dicarboxylic acid imides, acrylic acid, acrylic esters, acrylic amide, methacrylic acid, methacrylic esters and methacrylic amide.
Claim 17
Dependent Claim
40 words
A composition according to claim 1, wherein said modified block copolymer is ionically crosslinked through at least one metal ion selected from the group consisting of monovalent, divalent and trivalent metal ions to form an ionically crosslinked modified block copolymer.
Claim 18
Dependent Claim
57 words
A composition according to claim 16, wherein the ionical crosslinking of said modified block copolymer through said metal ion is made in a ratio of 0.1:3.0, said ratio being given in terms of a molar ratio of metal ion relative to the total of carboxylic acid group and groups derived therefrom contained in said modified block copolymer.
Claim 19
Dependent Claim
30 words
A composition according to claim 16, wherein said metal ion is at least one member selected from the group consisting of lithium, sodium, potassium, magnesium, calcium, zinc and aluminum ions.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-13 | 1990-10-13 | 1991-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-13 | 1994-10-13 | 1995-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-13 | 1998-10-13 | 1999-04-14 | $7700.00 | Window Closed / Lapsed |